The only difficulty that I had was in making it thick. And I can’t cook at all.
I made this with mashed potatoes (as the main dish) for 11 people.
About 3/4 really like the gravy (which is pretty darn good with this group.)
All in all, very worth making, just be prepared to let it sit for a while to thicken,
and never really get that thick. Also, be sure you like miso.